[PATCH 04/12] dt-bindings: rockchip: Add DesignWare based PCIe Endpoint controller

Niklas Cassel cassel at kernel.org
Wed Apr 24 08:16:22 PDT 2024


Document DT bindings for PCIe Endpoint controller found in Rockchip SoCs.

Signed-off-by: Niklas Cassel <cassel at kernel.org>
---
 .../bindings/pci/rockchip-dw-pcie-ep.yaml          | 192 +++++++++++++++++++++
 1 file changed, 192 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml
new file mode 100644
index 000000000000..57a6c542058f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml
@@ -0,0 +1,192 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/rockchip-dw-pcie-ep.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DesignWare based PCIe Endpoint controller on Rockchip SoCs
+
+maintainers:
+  - Niklas Cassel <cassel at kernel.org>
+
+description: |+
+  RK3588 SoC PCIe Endpoint controller is based on the Synopsys DesignWare
+  PCIe IP and thus inherits all the common properties defined in
+  snps,dw-pcie-ep.yaml.
+
+allOf:
+  - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: rockchip,rk3588-pcie-ep
+
+  reg:
+    items:
+      - description: Data Bus Interface (DBI) registers
+      - description: Data Bus Interface (DBI) shadow registers
+      - description: Rockchip designed configuration registers
+      - description: Memory region used to map remote RC address space
+      - description: Address Translation Unit (ATU) registers
+
+  reg-names:
+    items:
+      - const: dbi
+      - const: dbi2
+      - const: apb
+      - const: addr_space
+      - const: atu
+
+  clocks:
+    minItems: 6
+    items:
+      - description: AHB clock for PCIe master
+      - description: AHB clock for PCIe slave
+      - description: AHB clock for PCIe dbi
+      - description: APB clock for PCIe
+      - description: Auxiliary clock for PCIe
+      - description: PIPE clock
+      - description: Reference clock for PCIe
+
+  clock-names:
+    minItems: 6
+    items:
+      - const: aclk_mst
+      - const: aclk_slv
+      - const: aclk_dbi
+      - const: pclk
+      - const: aux
+      - const: pipe
+      - const: ref
+
+  interrupts:
+    items:
+      - description:
+          Combined system interrupt, which is used to signal the following
+          interrupts - phy_link_up, dll_link_up, link_req_rst_not, hp_pme,
+          hp, hp_msi, link_auto_bw, link_auto_bw_msi, bw_mgt, bw_mgt_msi,
+          edma_wr, edma_rd, dpa_sub_upd, rbar_update, link_eq_req, ep_elbi_app
+      - description:
+          Combined PM interrupt, which is used to signal the following
+          interrupts - linkst_in_l1sub, linkst_in_l1, linkst_in_l2,
+          linkst_in_l0s, linkst_out_l1sub, linkst_out_l1, linkst_out_l2,
+          linkst_out_l0s, pm_dstate_update
+      - description:
+          Combined message interrupt, which is used to signal the following
+          interrupts - ven_msg, unlock_msg, ltr_msg, cfg_pme, cfg_pme_msi,
+          pm_pme, pm_to_ack, pm_turnoff, obff_idle, obff_obff, obff_cpu_active
+      - description:
+          Combined legacy interrupt, which is used to signal the following
+          interrupts - tx_inta, tx_intb, tx_intc, tx_intd
+      - description:
+          Combined error interrupt, which is used to signal the following
+          interrupts - aer_rc_err, aer_rc_err_msi, rx_cpl_timeout,
+          tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx,
+          nf_err_rx, f_err_rx, radm_qoverflow
+      - description:
+          eDMA write channel 0 interrupt
+      - description:
+          eDMA write channel 1 interrupt
+      - description:
+          eDMA read channel 0 interrupt
+      - description:
+          eDMA read channel 1 interrupt
+
+  interrupt-names:
+    items:
+      - const: sys
+      - const: pmc
+      - const: msg
+      - const: legacy
+      - const: err
+      - const: dma0
+      - const: dma1
+      - const: dma2
+      - const: dma3
+
+  num-lanes: true
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    const: pcie-phy
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 2
+
+  reset-names:
+    items:
+      - const: pwr
+      - const: pipe
+
+  vpcie3v3-supply: true
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+  - num-lanes
+  - phys
+  - phy-names
+  - power-domains
+  - resets
+  - reset-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rockchip,rk3588-cru.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/power/rk3588-power.h>
+    #include <dt-bindings/reset/rockchip,rk3588-cru.h>
+
+    bus {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        pcie3x4_ep: pcie-ep at fe150000 {
+            compatible = "rockchip,rk3588-pcie-ep";
+            clocks = <&cru ACLK_PCIE_4L_MSTR>, <&cru ACLK_PCIE_4L_SLV>,
+                     <&cru ACLK_PCIE_4L_DBI>, <&cru PCLK_PCIE_4L>,
+                     <&cru CLK_PCIE_AUX0>, <&cru CLK_PCIE4L_PIPE>;
+            clock-names = "aclk_mst", "aclk_slv",
+                          "aclk_dbi", "pclk",
+                          "aux", "pipe";
+            interrupts = <GIC_SPI 263 IRQ_TYPE_LEVEL_HIGH 0>,
+                         <GIC_SPI 262 IRQ_TYPE_LEVEL_HIGH 0>,
+                         <GIC_SPI 261 IRQ_TYPE_LEVEL_HIGH 0>,
+                         <GIC_SPI 260 IRQ_TYPE_LEVEL_HIGH 0>,
+                         <GIC_SPI 259 IRQ_TYPE_LEVEL_HIGH 0>,
+                         <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH 0>,
+                         <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH 0>,
+                         <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH 0>,
+                         <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH 0>;
+            interrupt-names = "sys", "pmc", "msg", "legacy", "err",
+                              "dma0", "dma1", "dma2", "dma3";
+            max-link-speed = <3>;
+            num-lanes = <4>;
+            phys = <&pcie30phy>;
+            phy-names = "pcie-phy";
+            power-domains = <&power RK3588_PD_PCIE>;
+            reg = <0xa 0x40000000 0x0 0x00100000>,
+                  <0xa 0x40100000 0x0 0x00100000>,
+                  <0x0 0xfe150000 0x0 0x00010000>,
+                  <0x9 0x00000000 0x0 0x40000000>,
+                  <0xa 0x40300000 0x0 0x00100000>;
+            reg-names = "dbi", "dbi2", "apb", "addr_space", "atu";
+            resets = <&cru SRST_PCIE0_POWER_UP>, <&cru SRST_P_PCIE0>;
+            reset-names = "pwr", "pipe";
+        };
+    };
+...

-- 
2.44.0




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